package com.partner.frame.support.util;

import java.security.MessageDigest;

import org.springframework.dao.DataAccessException;
import org.springframework.security.authentication.encoding.PasswordEncoder;


@SuppressWarnings("deprecation")
public class TujiPassWordEncoder implements PasswordEncoder{
	
    public final static String MD5(String s) {
        char hexDigits[]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};       

        try {
            byte[] btInput = s.getBytes();
            // 获得MD5摘要算法的 MessageDigest 对象
            MessageDigest mdInst = MessageDigest.getInstance("MD5");
            // 使用指定的字节更新摘要
            mdInst.update(btInput);
            // 获得密文
            byte[] md = mdInst.digest();
            // 把密文转换成十六进制的字符串形式
            int j = md.length;
            char str[] = new char[j * 2];
            int k = 0;
            for (int i = 0; i < j; i++) {
                byte byte0 = md[i];
                str[k++] = hexDigits[byte0 >>> 4 & 0xf];
                str[k++] = hexDigits[byte0 & 0xf];
            }
            return new String(str);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    public String encodePassword(String rawPass, Object salt)  
            throws DataAccessException {  
        
        return MD5(rawPass); 
    }  
  
    public boolean isPasswordValid(String encPass, String rawPass, Object salt)  
            throws DataAccessException {  
          
        String pass1 = "" + encPass;  
        String pass2 = encodePassword(rawPass, salt);  
        return pass1.equals(pass2);  
    }  
	
    public static void main(String[] args) {
        System.out.println(TujiPassWordEncoder.MD5("20121221"));
        System.out.println(TujiPassWordEncoder.MD5("加密"));
    }
}
